Brand New circulating water pump for Ford small block V8 (includes gasket). Replaces: Mercury Marine Quicksilver original equipment part # 71683A1; OMC original equipment part # 982517; Pleasurecraft (PCM) original equipment part # RA057004; Sierra # 18-3584 These Brand new circulating pumps have a brass bi-directional impeller which means they can be used on either rotation engine. These are not Remanufactured, they are BRAND NEW! They have a 1-year limited warranty. We have sold thousands of these pumps and can count the warranties on 1 hand. Buy with confidence. These pumps are the best value on the market today!